1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Scale problem

  1. Jan 22, 2004 #1
    We have a helicopter flying and use the power "P" to keep it in equilibrium. But if the scale was greater n times, what would be the power to keep it there?
  2. jcsd
  3. Jan 24, 2004 #2
  4. Jan 24, 2004 #3
    Thanks, but didn't need such detail. I thought that if the scale was greater n times then the volume of the helicopter had to be proportional to n^3. So with the same density, its mass also had to be proportional to n^3.
    P= \Delta W/t

    P=F \Delta x/t

    P=mg \Delta x/t

    So if m increases n^3 times, P must increase n^3 times and the new power would be n^3P.
    Was I wrong?

    for latex.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Scale problem
  1. Scale IN variance (Replies: 3)

  2. Scaling the Universe (Replies: 2)

  3. Precision Scale (Replies: 6)

  4. Friction and Scaling (Replies: 6)